Days between dates
Count the distance between two Gregorian calendar dates. Weekdays mean Monday through Friday and do not exclude holidays.
141,280 days
From Tuesday, November 15, 1639 to Monday, September 7, 2026.
Monday–Friday weekdays100,914
Weeks and days20,182w 6d
Calendar span386 years, 9 months, 23 days
Standard mode excludes the earlier endpoint and includes the later endpoint. Reversed inputs keep the same absolute counts and are identified above.